(R)-1-((R)-4-Amino-2-((R)-2-amino-3-phenylpropanamido)-4-oxobutanoyl)pyrrolidine-2-carboxylic acid CAS 821776-16-3
| CAS No. | 821776-16-3 |
| Molecular Formula | C18H24N4O5 |
| Molecular Weight | 376.41 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C18H24N4O5, (R)-1-((R)-4-Amino-2-((R)-2-amino-3-phenylpropanamido)-4-oxobutanoyl)pyrrolidine-2-carboxylic acid contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 376.41 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO supplies (R)-1-((R)-4-Amino-2-((R)-2-amino-3-phenylpropanamido)-4-oxobutanoyl)pyrrolidine-2-carboxylic acid (CAS 821776-16-3), a certified reference material (molecular formula C18H24N4O5, MW 376.41 g/mol) for analytical method development and quality control.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C18H24N4O5 |
| Molecular Weight | 376.41 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1986 |
| Nitrogen Atoms | 4 |
Recommended Standards
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- 11-Ethyl Camptothecin (CAS 185807-29-8)
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- 2-Nitro-5-(((4-nitrophenyl)sulfonyl)methyl)furan (CAS 61266-29-3)
- tert-butyl N-[1-(3,3,3-trifluoropropanoyl)piperidin-4-yl]carbamate (CAS 1240528-25-9)
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- ((1r,2s,4s)-7-Oxabicyclo[2.2.1]heptan-2-yl)methanamine (CAS 1486473-03-3)
- Semaglutide impurity 248 (CAS CATO-C4X-2226248)
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